package com.schoolinfo.daoimpl;
// default package

import java.util.List;
import java.util.Set;
import org.hibernate.LockMode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.schoolinfo.dao.UserDAO;
import com.schoolinfo.model.User;

/**
 	* A data access object (DAO) providing persistence and search support for User entities.
 			* Transaction control of the save(), update() and delete() operations 
		can directly support Spring container-managed transactions or they can be augmented	to handle user-managed Spring transactions. 
		Each of these methods provides additional information for how to configure it for the desired type of transaction control. 	
	 * @see .User
  * @author MyEclipse Persistence Tools 
 */

public class UserDAOImpl extends HibernateDaoSupport implements UserDAO  {
	     private static final Logger log = LoggerFactory.getLogger(UserDAOImpl.class);
		//property constants
	public static final String NAME = "name";
	public static final String PHONE = "phone";
	public static final String QQ = "qq";



	protected void initDao() {
		//do nothing
	}
    
    /* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#save(com.schoolinfo.model.User)
	 */
    @Override
	public void save(User transientInstance) {
        log.debug("saving User instance");
        try {
        
            getHibernateTemplate().save(transientInstance);
            getHibernateTemplate().flush();
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }
    
	/* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#delete(com.schoolinfo.model.User)
	 */
	@Override
	public void delete(User persistentInstance) {
        log.debug("deleting User instance");
        try {
            getHibernateTemplate().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }
    
    /* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#findById(java.lang.String)
	 */
    @Override
	public User findById( java.lang.String id) {
        log.debug("getting User instance with id: " + id);
        try {
            User instance = (User) getHibernateTemplate()
                    .get("com.schoolinfo.model.User", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }
    
    
    /* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#findByExample(com.schoolinfo.model.User)
	 */
    @Override
	public List<User> findByExample(User instance) {
        log.debug("finding User instance by example");
        try {
            List<User> results = (List<User>) getHibernateTemplate().findByExample(instance); 
            log.debug("find by example successful, result size: " + results.size());
            return results;
        } catch (RuntimeException re) {
            log.error("find by example failed", re);
            throw re;
        }
    }    
    
    /* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#findByProperty(java.lang.String, java.lang.Object)
	 */
    @Override
	public List findByProperty(String propertyName, Object value) {
      log.debug("finding User instance with property: " + propertyName
            + ", value: " + value);
      try {
         String queryString = "from User as model where model." 
         						+ propertyName + "= ?";
		 return getHibernateTemplate().find(queryString, value);
      } catch (RuntimeException re) {
         log.error("find by property name failed", re);
         throw re;
      }
	}

	/* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#findByName(java.lang.Object)
	 */
	@Override
	public List<User> findByName(Object name
	) {
		return findByProperty(NAME, name
		);
	}
	
	/* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#findByPhone(java.lang.Object)
	 */
	@Override
	public List<User> findByPhone(Object phone
	) {
		return findByProperty(PHONE, phone
		);
	}
	
	/* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#findByQq(java.lang.Object)
	 */
	@Override
	public List<User> findByQq(Object qq
	) {
		return findByProperty(QQ, qq
		);
	}
	

	/* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#findAll()
	 */
	@Override
	public List findAll() {
		log.debug("finding all User instances");
		try {
			String queryString = "from User";
		 	return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}
	
    /* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#merge(com.schoolinfo.model.User)
	 */
    @Override
	public User merge(User detachedInstance) {
        log.debug("merging User instance");
        try {
            User result = (User) getHibernateTemplate()
                    .merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

    /* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#attachDirty(com.schoolinfo.model.User)
	 */
    @Override
	public void attachDirty(User instance) {
        log.debug("attaching dirty User instance");
        try {
            getHibernateTemplate().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }
    
    /* (non-Javadoc)
	 * @see com.schoolinfo.daoimpl.UserDAO#attachClean(com.schoolinfo.model.User)
	 */
    @Override
	public void attachClean(User instance) {
        log.debug("attaching clean User instance");
        try {
            getHibernateTemplate().lock(instance, LockMode.NONE);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

	public static UserDAO getFromApplicationContext(ApplicationContext ctx) {
    	return (UserDAO) ctx.getBean("UserDAO");
	}
	
	
	public void update(User transientInstance) {
        log.debug("update User instance");
        try {
        
            getHibernateTemplate().update(transientInstance);
            getHibernateTemplate().flush();
            log.debug("update successful");
        } catch (RuntimeException re) {
            log.error("update failed", re);
            throw re;
        }
    }
	
}